Java将时间加1分钟的方法

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date now = new Date();
System.out.println("当前时间：" + sdf.format(now));

方法一：
Date afterDate = new Date(now .getTime() + 60000);
System.out.println(sdf.format(afterDate ));

方法二：
Calendar nowTime = Calendar.getInstance();
nowTime.add(Calendar.MINUTE, 1);
System.out.println(sdf.format(nowTime.getTime()));